Summary: A person infected with COVID-19 died in Santa Clara County on Feb. 6, a stunning discovery that adds to the evidence that coronavirus was in the United States far earlier than once thought. It also sheds new light on how long the virus has been in California. Health reporter Erin Allday talks about what this news means. | Get unlimited Chronicle coverage: sfchronicle.com/pod Learn more about your ad choices. Visit megaphone.fm/adchoices
